The provocative spread comes three years after she was photographed in a tiny bikini on a St. Bart’s beach, frolicking and kissing Peter, who said people were “gross” for insinuating he had an inappropriate relationship with his mom.

“They are fearless kids. They grew up surrounded by art,” a family friend told me. “They decided to combat silliness with silliness.”

Harper’s Bazaar Editor-in-Chief Glenda Bailey said, “It’s a coup to have captured Stephanie Seymour’s first photo session with her sons. They are a family that puts the fun into fashion.”

The boys grew up in Greenwich, Conn., with a life-size nude bust of their mother on the wall — a work by Maurizio Cattelan, who was inspired by the taxidermied hunting trophies of their father, polo-playing art collector Peter Brant.

When the beach photos caused a stir three years ago, Peter II — who describes himself on Facebook as “a designer, art collector, socialite and model” — stated: “My mother and I are very close as she is with all her children . . . We have nothing to hide and with that in mind I would like to say that I am openly gay . . . and yes, our relationship may be different because of my sexuality.”

Seymour, who was once engaged to Guns N’ Roses rocker Axl Rose, is a marvel of motherhood, with two other kids as well. She’s looking good. She can’t help being hot.